Guard 'n' Aid Pest Off Plus FumerGarden N Aid Pest off Maxi Fumer Smoke Bomb Permethrin based smoke generators for use in controlling crawling and flying insects in difficult to reach places, grow rooms, empty glasshouses. You will need to ignite one unit for every 7. 5 cubic metres of airspace in the room house for Bed Bugs. You will still need to apply further insecticidal treatment if eggs are present as the smoke is not residual and any eggs will NOT be sterilised. We suggest